@article{ref1,
title="Periodic health examination, 1990 update: 2. Early detection of depression and prevention of suicide. Canadian Task Force on the Periodic Health Examination",
journal="CMAJ : Canadian Medical Association journal",
year="1990",
author="",
volume="142",
number="11",
pages="1233-1238",
abstract="<p>[Abstract unavailable]</p> <p>Language: en</p>",
language="en",
issn="0820-3946",
doi="",
url="http://dx.doi.org/"
}